- Francis Carrigan (E)
- killed accidentally, on 23 May 1865, by being run over by a railroad train, which cut off his left arm and leg
- James Etter (D)
- accidentally injured in neck and shoulders, when he fell out of a wagon he had been loading, because the wagon was started unexpectedly
- David Ginther (A)
- 'wounded in the foot with an axe clearing the timber before action' near Petersburg, Virginia, on 30 March 1865; died 8 May 1865 of those wounds
- George Hampton (E)
- accidentally wounded in his shoulder, in Philadelphia Pennsylvania, in August 1861
- George Hollick (E)
- hernia from lifting beef
- Lawrence Humphries (H)
- killed accidentally, Washington DC, 16 Apr 62 [later report: a charge of drunkenness against him was removed; he either was "brutally murdered, or met his death by stumbling over blocks of marble and striking his head against cog-wheels at the Capitol extension"]
- Jacob Keesey (H)
- accidentally injured on right side
- William McLaughlin (B)
- killed accidentally at Philadelphia PA by a fall while on duty
- Samuel Mock (B)
- received a back injury when he was helping carry logs to build winter quarters, and others dropped the other end (1 November 1864) (description)
- William Redheffer (A)
-
accidentally killed on 2 May 1864, at the Delaware Junction of the Philadelphia, Wilmington, and Baltimore Railroad, when he was pulled out of a railroad car when his feet, dangling out of the car, caught on a bridge
- Robert Sinex (D)
- December 1861, accidentally cut with a sword; lost several pieces of bone from his left leg, below his knee
- Thomas Tully (E)
- accidentally wounded in hand, at Washington DC; lost finger
- Benjamin Vaughen (B)
- killed accidentally, at Alexandria VA, 4 Jul 62, by a fall, while in confinement [the Philadelphia death certificate adds that he fell from a window while in hospital at Alexandria VA]
- Joseph Whitaker (G)
- accidentally wounded by ramrod being run through his right hand
- Samuel Wilson (D)
- fell down stairs in dark while on detail searching for contraband in engine house, Alexandria VA